So, we know the image is from the next major arc from the pair, bearing that name "Endgame." We know that's Batman with some kind of high-powered gun. We know that's Bluebird (Harper Row) on the right of the image.

But who the heck is that other person? Is this a new Nightwing? An entirely new character? Harper's brother maybe? We've reached out to DC Comics for comment, but for now we want to hear your thoughts.